Home » Cisco » 350-080 » What is required for proper implementation of jumbo frame support on a Cisco Nexus 2000 Series Fabric Extender?
What is required for proper implementation of jumbo frame support on a Cisco Nexus 2000 Series Fabric Extender?
A. The interface configured as FEX fabric requires the MTU to be set to jumbo.
B. The service policy must be applied to the system QoS.
C. The device defaults to jumbo frame support; no changes are required.
D. The switchport in the FEX interface must be set to MTU 9216.
Correct Answer: B
Explanation/Reference:
Explanation:
The system qos is a type of MQC target. You use a service-policy to associate a policy map with the system qos target. A system qos policy applies to all interfaces on the switch unless a specific interface has an overriding service-policy configuration. The system qos policies are used to define system classes, the classes of traffic across the entire switch, and their attributes. To ensure QoS consistency (and for ease of configuration), the switch distributes the system class parameter values to all its attached network adapters using the Data Center Bridging Exchange (DCBX) protocol.
If service policies are configured at the interface level, the interface-level policy always takes precedence over system class configuration or defaults.
Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus2000/sw/configuration/guide/rel_521/ b_Configuring_the_Cisco_Nexus_2000_Series_Fabric_Extender_rel_5_2/ b_Configuring_the_Cisco_Nexus_2000_Series_Fabric_Extender_rel_5_2_chapter_01.html
